<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="username" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="sex">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="add">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.username }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="del(index)">删除</button>
            <button @click="edit(item, index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      username: "",
      age: "",
      sex: "",
      eidt: false,
      arr: [],
      ind: 0,
    };
  },
  methods: {
    add(i) {
      if (this.username == "" || this.age == "" || this.age == "") {
        alert("请输入数据");
        return;
      } else {
        if (!this.eidt) {
          this.eidt = false;
          this.arr.push({
            username: this.username,
            age: this.age,
            sex: this.sex,
          });
        } else {
          this.$set(this.arr, this.ind, {
            username: this.username,
            age: this.age,
            sex: this.sex,
          });
        }
      }
    },
    del(i) {
      this.arr.splice(i, 1);
    },
    edit(item, index) {
      this.eidt = !this.eidt;
      this.username = item.username;
      this.age = item.age;
      this.sex = item.sex;
      this.ind = index;
    },
  },
};
</script>
